[yocto] Modify udev

[ChenQi]

On 06/17/2013 05:10 PM, Jack wrote:
> ChenQi <Qi.Chen at ...> writes:
>
>> On 06/17/2013 01:19 PM, jack wrote:
>>> ChenQi <Qi.Chen <at> ...> writes:
>>>
>>>> On 06/16/2013 07:45 PM, Jack wrote:
>>>>> Hi,
>>>>>
>>>>> In my imageو starting udev take a long time about 6 seconds whereas
> the time
>>>> If the performance is important, what about using udev-cache to speed up
>>>> the boot process?
>>>>
>>> How should I use udev-cache ?
>>>
>> To add udev-cache to your image, add the following line to your local.conf.
>> IMAGE_INSTALL_append += "udev-cache"
> I add this line to my local.conf but starting udev take about 6 seconds in
> boot process yet. What solution do you propose ?
>
I've just filed a bug for the udev-cache.
https://bugzilla.yoctoproject.org/show_bug.cgi?id=4738

The patch is still under review. If you want to use it now, please visit 
the following link and take the patch.
http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=ChenQi/udev-cache-fix

I've made some simple tests myself. With udev-cache enabled, the udev 
takes less than 1s to start (not the first boot).

//Chen Qi
>
>
>
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